That is another reason why I'm anticipating Son Goku's conversation with the son of King Cold. What's the logic behind involving him? If their is any. (Knowing Son, it lacks any real thought. Or he figures "his golden form is strong so he'll be helpful.")
Just seems to be that they need a new fighter in short space of time & Frieza with his Golden form is pretty damn powerful & his combat knowledge is expansive. However I can imagine that something bad will happen with Frieza (maybe involving Frost) and Frieza will have his own ideas. He has already shown his hatred for the saiyans goes further than his care for his own life and he would want revenge at any cost.
Though will be interesting to see his reaction when he finds out there are saiyans in another universe too.